Industrial Control and Systems PART 2: STATIC AC TRANSFER EQUIPMENT

Abstract

This publication applies to static (solid-state), automatic and non-automatic open transition transfer equipment (without cross-connection of sources during transfer or retransfer), with or without bypass isolation switches, rated 600 volts AC or less, not exceeding 6000 amps, for use on single-phase and polyphase AC circuits.

Closed transition static transfer equipment (that does have cross-connection of sources during transfer or retransfer) is outside the scope of this Standard.

General

The definitions and requirements of NEMA ICS 1, except for clause 7 pertaining to spacings as indicated, also apply to this publication.

This publication covers static automatic transfer equipment intended for use in ordinary (non-hazardous) locations to provide for lighting and power only in optional standby systems in accordance with Article 702 of the National Electrical Code®, ANSI/NFPA 70